<PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="9.0.5" />

IConfigurationBuilder

public interface IConfigurationBuilder
Represents a type used to build application configuration.
using System.Collections.Generic; using System.Runtime.CompilerServices; namespace Microsoft.Extensions.Configuration { [System.Runtime.CompilerServices.NullableContext(1)] public interface IConfigurationBuilder { IDictionary<string, object> Properties { get; } IList<IConfigurationSource> Sources { get; } IConfigurationBuilder Add(IConfigurationSource source); IConfigurationRoot Build(); } }